From: Sidhartha Kumar <sidhartha.kumar@oracle.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: akpm@linux-foundation.org, songmuchun@bytedance.com,
mike.kravetz@oracle.com, willy@infradead.org, vbabka@suse.cz,
william.kucharski@oracle.com, dhowells@redhat.com,
peterx@redhat.com, arnd@arndb.de, ccross@google.com,
hughd@google.com, ebiederm@xmission.com,
Sidhartha Kumar <sidhartha.kumar@oracle.com>
Subject: [PATCH v2 4/6] mm/hugetlb: add hugetlb_set_folio_subpool() helper
Date: Tue, 6 Sep 2022 09:54:43 -0700 [thread overview]
Message-ID: <20220906165445.146913-5-sidhartha.kumar@oracle.com> (raw)
In-Reply-To: <20220906165445.146913-1-sidhartha.kumar@oracle.com>
Allows hugetlb subpool information to be set through a folio.
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
---
fs/hugetlbfs/inode.c | 4 ++--
include/linux/hugetlb.h | 8 +++++++-
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index c2e9c0cdbd81..d9e08c445e2f 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -1152,9 +1152,9 @@ static int hugetlbfs_migrate_folio(struct address_space *mapping,
return rc;
if (hugetlb_folio_subpool(src)) {
- hugetlb_set_page_subpool(&dst->page,
+ hugetlb_set_folio_subpool(dst,
hugetlb_folio_subpool(src));
- hugetlb_set_page_subpool(&src->page, NULL);
+ hugetlb_set_folio_subpool(src, NULL);
}
if (mode != MIGRATE_SYNC_NO_COPY)
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 3602e4cda31f..68177725a897 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -757,10 +757,16 @@ static inline struct hugepage_subpool *hugetlb_page_subpool(struct page *hpage)
return hugetlb_folio_subpool(page_folio(hpage));
}
+static inline void hugetlb_set_folio_subpool(struct folio *folio,
+ struct hugepage_subpool *subpool)
+{
+ folio_set_private_1(folio, (unsigned long)subpool);
+}
+
static inline void hugetlb_set_page_subpool(struct page *hpage,
struct hugepage_subpool *subpool)
{
- set_page_private(hpage + SUBPAGE_INDEX_SUBPOOL, (unsigned long)subpool);
+ hugetlb_set_folio_subpool(page_folio(hpage), subpool);
}
static inline struct hstate *hstate_file(struct file *f)
--
2.31.1
next prev parent reply other threads:[~2022-09-06 16:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-06 16:54 [PATCH v2 0/6] begin converting hugetlb code to folios Sidhartha Kumar
2022-09-06 16:54 ` [PATCH v2 1/6] mm/hugetlb: add folio support to hugetlb specific flag macros Sidhartha Kumar
2022-09-06 16:54 ` [PATCH v2 2/6] mm: add private field of first tail to struct page and struct folio Sidhartha Kumar
2022-09-06 16:54 ` [PATCH v2 3/6] mm/hugetlb: add hugetlb_folio_subpool() helper Sidhartha Kumar
2022-09-06 16:54 ` Sidhartha Kumar [this message]
2022-09-06 16:54 ` [PATCH v2 5/6] hugetlbfs: convert hugetlb_delete_from_page_cache() to use folios Sidhartha Kumar
2022-09-06 16:54 ` [PATCH v2 6/6] mm/hugetlb add folio_hstate() Sidhartha Kumar
2022-09-07 4:01 ` kernel test robot
2022-09-07 5:23 ` kernel test robot
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